Polar Code and Winterization 1015 - Safer Smarter Greener · DNV GL © 17 October 2018 SAFER,...
Transcript of Polar Code and Winterization 1015 - Safer Smarter Greener · DNV GL © 17 October 2018 SAFER,...
DNV GL © 17 October 2018 SAFER, SMARTER, GREENERDNV GL ©
Yanran Wang, Won Ho Lee
17 October 2018
Polar Code and Winterization
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DNV GL Annual Technology Seminar
DNV GL © 17 October 2018
Welcome
2
Ballast Water Management Plan for D-2 Treatment
DNV GL © 17 October 2018
Agenda
08:30 Introduction
Polar Code Structure Requirement
10:00 Coffee Break
10:10 Polar Code Requirement, cont’d
Questions and Discussions
11:30 End of the Seminar
3
Yanran Wang
Senior Engineer
Maritime Advisory
Won Ho Lee
Principal Engineer
Hull & Structures
DNV GL © 17 October 2018
Introduction
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DNV GL © 17 October 2018
Why a need for a new mandatory IMO Polar Code
5
Less ice in polar waters opens up opportunities.
It increases:
• new shipping lines
• oil & gas exploration and production
• mineral recovery and export
• tourism
• attraction to new and less experienced operators
• focus on the vulnerable environment in Polar areas
DNV GL © 17 October 2018
Increased risk level for polar water operations
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• The risk level depends on geographical location and time of the
year (ice-type, ice-coverage, temperature, daylight etc.)
• Mitigating measures may vary within polar waters.
Sea ice age 2012
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The need for a new mandatory IMO Polar Code
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• Existing international conventions do not include operational conditions like low temperatures and sea ice
• Proposed to IMO by Denmark, Norway and USA in 2009
DNV GL © 17 October 2018
The Goal of the Polar Code
To provide for safe ship operation and the protection of the polar
environment by addressing risks present in polar waters and not
adequately mitigated by other instruments of the Organization.
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DNV GL © 17 October 2018
Applicability
� The main requirements are related to:
– Safety
– Protection of the environment
– Seafarer competence
� It is implemented through amendments to:
– SOLAS (International Convention for the Safety of Life at Sea)
– MARPOL ( The International Convention for the Prevention of Pollution from Ships)
– STCW (The International Convention on Standards of Training, Certification and Watchkeeping for Seafarers)
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DNV GL © 17 October 2018
Geographical demarcation of the Arctic
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North of latitude 60°N
Include waters around the southern exposure of Greenland
Exclude area around Iceland, the Norwegian mainland, Russia’s Kola Peninsula, the White Sea, the Sea of Okhotsk, and Alaska’s Prince William Sound
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Geographical demarcation of the Antarctic
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South of latitude 60°S
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Ship category
Ship category is defined by:
� Ship types
� Polar Service Temperature (PST)
� Ice class
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It is always the responsibility of the Master to ensure that the vessel is operated within
these limits!
Intended to operate in low air temperature
Those which are not
Category A: at least medium first-year ice (0.7-1.2m)
Category B: at least thin first-year ice (0.3-0.7m)
Category C: open water or less severe than A & B
Tanker
Passenger ship
Other
A temperature specified for ship intended to operate in
DNV GL © 17 October 2018
Polar Service Temperature (PST)
–15°• LMDLT
–25°• PST = LMDLT-10°
� Systems and equipment required by this Code shall be fully functional at the Polar Service
Temperature.
� The PST must be at least 10°C colder than the lowest Mean Daily Low Temperature (MDLT) for
the intended area and season of operation in polar water.
� Example: If the lowest MDLT is -15°C, then the PST equals -25°C.
DNV GL © 17 October 2018
Operate in low air temperature
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� The lowest MDLT means the mean value of the daily low temperature for each day of the year over
a period of at least 10 years.
– Determine the daily low temperature for each day over a ten-year period in the intended area of operation in polar waters
– Determine the average of the values over the 10 years period for each day
– Plot the daily averages over the year
– Take the lowest of the averages for the season of operation
� A ship intended to operate in low MDLT means a ship intended to undertake voyages to or through
areas where the is colder than -10°C.
DNV GL © 17 October 2018
Example – Bjørnøya, Norway (1998-2012)
LMDLT
PST ≤ LMDLT – 10°C
Data source: Norwegian Meteorological Institute
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DNV GL © 17 October 2018
Structure of the Code
� Preamble
� Introduction (goal, definitions, sources of hazards)
� Part I:
• Part I-A: Mandatory provisions on safety measures in accordance with
the relevant SOLAS chapter
• Part I-B: Recommendations on safety
� Part II:
• Part II-A: Mandatory provisions on pollution prevention in accordance
with relevant MARPOL Annexes
• Part II-B: Recommendations on pollution prevention
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included through
a new chapter XIV
in SOLAS
included in
MARPOL
Annexes I, II, IV
and V
DNV GL © 17 October 2018
Sources of Hazards
� Ice
� Topside icing
� Low temperature
� Darkness
� High latitude (navigation, communication, ice
information)
� Remoteness (limited SAR facilities)
� Possible lack of accurate and complete hydrographic
data and information
� Crew experience
� Lack of suitable emergency response equipment
� Rapidly changing and severe weather conditions
� Environmental impacts
� Additional recognized risks
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Operational assessment
To establish procedures or operational limitations, an assessment of the ship and its equipment
shall be carried out, taking into consideration the following:
� anticipated range of operating and environmental conditions, such as:
– operation in low air temperature
– operation in ice
– operation in high latitude
– potential for abandonment onto ice or land
� hazards
� additional hazards, if identified
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Polar Water Operational Manual
� The Manual shall include or refer to specific risk based procedures to be followed:
– in normal operations and in order to avoid encountering conditions that exceed the ships
capabilities
– procedures to be followed in the event of incidents in polar waters
– procedures to be followed in the event that conditions are encountered which exceed the ships'
specific capabilities and limitations
– procedures to be followed when using icebreaker assistance, as applicable
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The Polar Water Operational Manual is new, mandatory
and has to be developed for the actual ship and planned
operation
DNV GL © 17 October 2018
The road map for implementing Polar Code requirement
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Passage planning
Polar Water Operational Manual
Development
Structure & Procedure
Preparation
Crew Training
Admin/RO approval & survey
Polar Code Certificate
Operational Assessment
DNV GL © 17 October 2018
PART I-A SAFETY MEASURES
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DNV GL © 17 October 201822
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Ice Loads and Response
� Long experience of commercial “ships” operating in Baltic and Arctic areas
� IACS Polar Class (Rev.3) implemented into the Rules
� Offshore ship-shaped units and column stabilized unit covered by Ship Classification Rules
(Pt.6 Ch.6) and Offshore standard (OS-C103)
� No applicable rules/standards for Jack up for arctic operation (ISO 19906 not directly
applicable, but BSEE adopt API-RP 2N for MODUs and jack-up rigs )
� Effect of physical ice management in operating draft are not considered
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Classification of Ice Going Vessels
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The Class Requirements are based on the following conditions:
� Ice conditions and type (for operation and transit)
� Design temperature
� Possibility of assistance from ice breakers
� Special regional requirements
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Definition
� Ice breaking / Ice breaker
� Ice ramming
� Ice beaching
� Ice compression
� Crushing strength
� Flexural strength
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Baltic Ice Class
� Design ice condition for ice strengthening:
- Level ice thickness not exceeding ho.
- Design height (h) of the area actually under ice pressure.
� Design condition for propulsion: Minimum speed of 5 knots in brash ice channels
� Max nom. ice pressure: 5.6 MPa
ICE Class ho (m) h (m)
ICE-1A*
ICE-1A
ICE-1B
ICE-1C
1.0
0.8
0.6
0.4
0.35
0.30
0.25
0.22
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Hull Area of Ice Strengthening
Requirements to:
- Plating and stiffeners in icebelt
- Girders and stringers in icebelt
- Appendages
- Machinery components
Midbody regionBow region
Stern region
Upper bow ice belt
DNV GL © 17 October 2018
IACS Polar Class Rules
� The IACS Unified Requirements for Polar Class Ships (UR-I) was ratified by the
IACS members
� The Polar Class rules are a result of a large harmonization effort among the
classification societies, relevant governmental bodies and academic experts
� With the aim of rationalizing and harmonizing structural and machinery
requirements applicable for vessels operating in Polar waters.
� The Polar ships apply to ships intended for independent navigation in ice-
infested waters.
� For ships assigned with
- PC1 – PC5: blunt and vertical bows (incl. bulbous bows) generally to be
avoided
- PC6 – PC7: open water bows (bulbous bows) with operational limitations
(e.g. no ramming)
DNV GL © 17 October 2018
Class notation Ice thickness Design Impact limits Ice condition Material
Ice(E)
Ice(C)
0.4m
0.4m
Basic Ice strengthening
No ramming
Very light ice condition
Not required
Ice(1C)
Ice(1B)
Ice(1A)
Ice(1A*)
(Ice-1A*F)
0.4m
0.6m
0.8m
1.0m
Baltic Ice Classes
First year ice and broken channel
ICE-05
ICE-10
ICE-15
0.5m
1.0m
1.5m
Vessels for Arctic and
ice breaking service
First year ice with pressure ridges
POLAR-10
POLAR-20
POLAR-30
1.0m
2.0m
3.0m
Accidental ramming
Multi year ice with glacial inclusions
DAT(-30) is mandatory, as minimum.
Icebreaker Ice breaking (main purpose)
Repeated ramming
DNVGL ICE Class Notations
Heavy ice
PC(1) – PC(7)
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Polar Class Description
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PC(1) to PC(7) may be assigned additional
notation Icebreaker
Cate
go
ry A
Cate
go
ry B
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Polar Class Rules
� Two glancing impact load scenarios:
– Ramming scenario
– Glancing impacting scenario, dimensioning for the structural design of the bow
(used as basis for the remaining part of the hull)
<<
DNV GL © 17 October 2018
Polar Class Rules – Design Ice Load
Normal frame angle
(vertical side = 0)
Bow shape
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Design Pressure Formulation
� Load defined as rectangular ice pressure area (patch load)
� For bow area, the height and width of the load area related to bow shape
� For non-bow regions, ice is assumed to fail by crushing and the ratio of length over height (aspect ratio, AR) is set 3.6
DNV GL © 17 October 2018
Ice Glancing Impact, Bow Area
Ice load characteristics of bow area
- Bow shape coefficient (fa)
- Total glancing impact force (F)
- Line load (Q)
- Pressure (P)
F = fa * CFc * D0.64 [MN}
Design patch load parameters:
� wBOW = F / Q
� bBOW = Q / P
� Pave = F / (w x b)
DNV GL © 17 October 2018
Design Patch Load Area
Rectangular
patch load
Transverse frame
Longitudinal frame
DNV GL © 17 October 2018
Hull Area of Ice Strengthening
Bow area
Bow
intermediate
area
Mid-body areaStern area
BottomLower
Ice belt
DNV GL © 17 October 2018
Hull Area Factors
� Dependent on class notations and operational mode
� Bow region fixed as 1.0
� Separate hull factor for ships with
o thruster/podded propulsion
o astern operation
o ice breaker
DNV GL © 17 October 2018
Ice Compression Load Amidships
� All ships to withstand line loads at waterline level on both sides of the hull (assumed
trapped)
� Design line loads for vertical side shell:
– Q = 950 (CFm)1.5
� Combined with static sea pressure Polar class CFm
PC(1) 3.0
PC(2) 2.5
PC(3) 2.0
PC(4) 1.6
PC(5) 1.2
PC(6) 0.7
PC(7) 0.5
DNV GL © 17 October 2018
Important Design Parameters
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Design parameters to be decided:
� Design loads/Ice thickness for Operation and Transit
� Structural arrangement:
� Hull forms (open water and ice going)
� Stiffening arrangement (longitudinal or transverse system)
� Stiffener spacing (weight control and productivity)
� Material yield strength (weight control)
DNV GL © 17 October 2018
Example – Plate
� L = 220 m
� Disp = 95,000 ton (at UIWL)
� Sigy = 355 MPa
Longitudinally framed platingTransversely framed plating
Var
eid
e Dr
illin
g C
om
p. In
c.
DN
V E
xp
lo
re
r
DNV GL © 17 October 2018
Example – Plate
Var
eid
e Dr
illin
g C
om
p. In
c.
DN
V E
xp
lo
re
r
� L = 220 m
� Disp = 95,000 ton (at UIWL)
� Sigy = 355 MPa
DNV GL © 17 October 2018
Stiffening Arrangement
Vareide Drilling Comp. Inc.
DNV Explorer
Stern Mid body BowBow int.
Ice belt
Lower
Bottom
Longitudinal
(except bilge area)Trans.
Trans.
Long.
Trans.
Long. / Trans.
Long.
Long. / Trans.
DNV GL © 17 October 2018
Where to be a Direct Calculation?
� Not applicable for shell plating and local frames
� Load carrying stringers and web frames forming a part of grillage system
� Direct calculation may be used for the scantling control of the support structures for
local frames (ex. top stiffeners, brackets)
� Design patch load only
� Linear or non-linear analysis
– Buckling criteria (by class society)
– Nominal shear stresses (yield/ 3)
– Nominal von-Mises stresses (=1.15 *yield)
DNV GL © 17 October 2018
Direct Calculation
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Load Cases - Example
Load ICE patch load only (anywhere within ice belt) Static sea pressure + line load
Model
(net scantling)
� LC1-A (ordinary frame)
� LC1-B (TBHD)
� LC1-C (Stringer)
� LC2-A: ordinary web frame
�LC2-B: transverse bulkhead
DNV GL © 17 October 2018
Yield Check
Stiffener web: not used for evaluation
Top stiffener to be checked
DNV GL © 17 October 2018
PC - Corrosion/Abrasion Protection
� Min. corrosion/abrasion ts = 1.0 mm for all internal structures
within ice-strengthened hull areas (plate, stiffener web and flange)
� Steel renewal is required when the gauged thickness is less than
t_net+0.5 (mm)
DNV GL © 17 October 2018
Material Selection – Temperature for hull
Design temperature = -20°C
Service temperature = -20°C
Service temperature = 0°C
DNV GL © 17 October 2018
Polar Class – Hull Materials
� IACS UR I6 – minimum material grades (B/AH) for ships with ice strengthening
� All weather exposed plating of hull structures and appendages above 0.3m above the lower ice
water line
� Applies to all inboard contiguous members within 600 mm of the exposed plating
DNV GL © 17 October 2018
Polar Class - Steel Grade Selection
DNV GL © 17 October 2018
Welding
� Weld connection of local frames (stiffeners), load carrying stringers and web frames supporting
local frames:
– Weld factor, fweld = 0.31 rw, min. 0.26 for middle 60% of span
= 0.52 rw, min. 0.43 at ends
� Weld throat thickness need not be greater than 0.5 x t (as built) of the abutting plate
IACS UR
DNV GL
DNV GL © 17 October 2018
ICE Class Notations for Column-stabilized units
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� ICE-L: Baltic ice class / PC(6) or PC(7)
� Displacement at transit condition
� Min. machinery output (kW) (towing power for non-propulsion unit)
DNV GL © 17 October 2018
Column Stabilized Unit
DNV GL © 17 October 2018
Column Stabilized Unit
� Bow region
1) distance from the stem to a line parallel to and 0.04L aft of the forward borderline of the part of the
pontoon where the waterline run parallel to the centreline (overlap: max.5m)
2) Shall not be taken less than the distance from the stem to the first point of the column footing
where the tangential at the point is running parallel with the centreline of the pontoon
1)
2)
1) 1)
DNV GL © 17 October 2018
Column Stabilized Unit
H
Special arrangement of min. bracing air clearance (H):
- 1.8m for ICE-1A(T)
- 1.5m for ICE-1B(T)
- 1.2m for ICE-1C(T)
DNV GL © 17 October 201856
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 4. Subdivision and stability
� Goal
Ensure adequate subdivision and stability in both
intact and damaged conditions.
� Functional requirements
– Ships shall have sufficient stability in intact conditions
when subject to ice accretion
– Ships of category A and B, constructed on or after 1
Jan 2017, shall have sufficient residual stability to
sustain ice-related damages
30kg/m2 on exposed weather decks and gangways
7.5kg/m2 for the projected lateral area of each side
above the water plane
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DNV GL © 17 October 201858
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 5. Watertight and Weathertight Integrity
� Goal
To provide measures to maintain watertight and weathertight integrity
� Functional requirements
All closing appliances and doors relevant to watertight and weathertight integrity of the
ship shall be operable
� Regulations
59
DNV GL © 17 October 2018
Chapter 5. Watertight and Weathertight Integrity
60
– Where ice accretion is likely, means shall be provided to remove or prevent ice and snow
accretion around hatches and doors
DNV GL © 17 October 2018
Chapter 5. Watertight and Weathertight Integrity
61
– For ships intended to operate in low air temperature, if the hatches or doors are
hydraulically operated, means shall be provided to prevent freezing or excessive viscosity of
liquids
DNV GL © 17 October 2018
Chapter 5. Watertight and Weathertight Integrity
– Watertight and weathertight doors, hatches and closing devices which are not within habitable
environment and require access while at sea shall be designed to be operated by personnel
wearing heavy winter clothing including thick mittens
DNV GL © 17 October 201863
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� Goal
Ensure that machinery installations are capable
of delivering the required functionality
necessary for safe operation of ships
64
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against the effect of ice
accretion and/or snow accumulation
65
Ice accumulation can occur to:- Atmospheric water
SnowRainFog
- Water spray from the seaHigh wind speedLow air & water temperature
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against the effect of ice
accretion and/or snow accumulation
66
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against the effect of ice
accretion and/or snow accumulation
67
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against the effect of ice
accretion and/or snow accumulation
68
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against the effect of ice
accretion and/or snow accumulation
69
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against ice ingestion from
sea water
70
John I
http://www.bst-tsb.gc.ca/eng/rapports-
reports/marine/2014/m14a0051/m14a0051.asp
DNV GL © 17 October 2018
Chapter 6. Machinery installations
� machinery installations and associated equipment shall be protected against freezing and
increased viscosity of liquids
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Chapter 6. Machinery installations
� exposed machinery and electrical installation and appliances shall function at PST
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DNV GL © 17 October 2018
Chapter 6. Machinery installations
� exposed machinery and electrical installation and appliances shall function at PST
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DNV GL © 17 October 2018
Chapter 6. Machinery installations
� means shall be provided to ensure that combustion air for internal combustion engines driving
essential machinery is maintained at a temperature in compliance with the criteria provided by
the engine manufacturer
74
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Chapter 6. Machinery installations
� For low air temperature operation, materials of exposed machinery and foundations shall be
approved
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DNV GL © 17 October 2018
Chapter 6. Machinery installations
� Scantlings of propeller blades, propulsion line, steering equipment and other appendages shall be
approved by Administration or RO taking into account standards acceptable to the Organization or
other standards offering an equivalent level of safety for Category A and B ships.
� For Category C ship, … taking into account acceptable standards adequate with the ice types and
concentration encountered in the area of operation
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DNV GL © 17 October 201877
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� Goal
To ensure that fire safety systems and appliances are effective and operable, and that means of
escape remain available to ensure safe escape to the lifeboat and life-rafts under expected
environmental conditions
78
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� All components of fire safety systems and appliances if installed in exposed positions shall be
protected from ice accretion and snow accumulation.
79
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� Local equipment and machinery controls shall be arranged so as to avoid freezing, snow
accumulation and ice accretion and their location to remain accessible at all time.
80
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� The design of fire safety systems and appliances shall take into consideration the need for
persons to wear bulky and cumbersome cold weather gear, where appropriate
81
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Chapter 7. Fire Safety/Protection
� Means shall be provided to remove or prevent ice and snow accretion from accesses
82
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Chapter 7. Fire Safety/Protection
� Extinguishing media shall be suitable for intended operation
83
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� If ship intends to operate in low air temperature, all components of fire safety systems and
appliances shall be designed to ensure availability and effectiveness at PST
84
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Chapter 7. Fire Safety/Protection
� Materials used in exposed fire safety systems shall be suitable for operation at PST
85
DNV GL © 17 October 2018
Chapter 7. Fire Safety/Protection
� Regulations
– Isolating and pressure/vacuum valves in exposed locations shall be protected from ice
accretion and remain accessible at all times.
– All two-way portable radio communication equipment shall be operable at PST.
– Firefighter’s outfits shall be stored in warm locations on the ship
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Chapter 7. Fire Safety/Protection
– Fire pumps (emergency fire pumps, water mist and water spray pumps) shall be located in
compartments maintained above freezing。
– The fire main is to be arranged so that exposed sections can be isolated and means of draining
of exposed sections shall be provided. Fire hoses and nozzles need not be connected to the fire
main at all times, and may be stored in protected locations near the hydrants.
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DNV GL © 17 October 201888
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 8. Life Saving Appliances
� Goal
Provide for safe escape, evacuation and survival.
� Regulations - Escape
– Means to remove or prevent ice and snow accretion from escape routes, muster stations,
embarkation areas, survival craft, its launching appliances and access to survival craft
– Room on escape way for people wearing bulky polar survival clothing (NB)
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Chapter 8. Life Saving Appliances
� Regulations - Evacuation
– Means to ensure safe evacuation of persons, including safe deployment of survival equipment,
when operating in ice-covered waters, or directly onto the ice
– Power for evacuation equipment from other sources than ship’s main source of power
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Chapter 8. Life Saving Appliances
� Regulations - Survival
– for passenger ships, a proper sized immersion suit or a thermal protective aid shall be provided
for each person on board
– immersion suits shall be of the insulated type
– search lights for life boats for ships operating extended periods of darkness
– lifeboats partially or totally enclosed type
– personal survival equipment and group survival equipment
91
DNV GL © 17 October 2018
Example personal survival equipment
� Protective clothing (hat, gloves, socks, face and neck protection, etc.)
� Thermal protective aid
� Sunglasses
� Whistle
� Drinking mug
� Penknife
� Polar survival guidance
� Emergency food
� Carrying bag
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https://hansenprotection.com/polarcode/index.html
DNV GL © 17 October 2018
Example group survival equipment
� Shelter
� Thermal protective aids or similar
� Sleeping bags
� Foam sleeping mats or similar
� Shovels
� Sanitation (e.g. toilet paper)
� Stove and fuel
� Emergency food
� Flashlights
� Waterproof and windproof matches
� Whistle
� Signal mirror
� Water containers & water purification tablets
� Spare set of personal survival equipment
� Group survival equipment container (waterproof and
floatable)
93
https://www.viking-life.com/en/survival-kits-and-life-saving-appliances/polar-products/polar-solutions/5094-1069178-viking-group-survival-kit-gsk-one-size
DNV GL © 17 October 2018
Chapter 8. Life Saving Appliances
� Regulations - Survival
– Adequate emergency rations shall be provided, for the maximum expected time of rescue
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Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 9. Safety of Navigation
� Regulations – Nautical information
– Ships shall have means of receiving and displaying current information on ice conditions in the
area of operation
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Chapter 9. Safety of Navigation
� Regulations – Navigational equipment functionality
– For ice strengthened ships constructed on or after 1 January 2017 two independent echo-
sounding devices or one echo-sounding device with two separate independent transducers
required
– Clear view astern if possible
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Chapter 9. Safety of Navigation
� Regulations – Navigational equipment functionality
– Provide means to prevent the accumulation of ice on antennas required for navigation and
communication
– ships with ice strengthening:
�where equipment required by SOLAS chapter V or this chapter have sensors that project
below the hull, such sensors shall be protected against ice
�in category A and B ships constructed on or after 1 January 2017, the bridge wings shall be
enclosed or designed to protect navigational equipment and operating personnel
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DNV GL © 17 October 2018
Chapter 9. Safety of Navigation
� Regulations – Navigational equipment functionality
– Ships shall have two non-magnetic means to determine and display their heading. Both means
shall be independent and shall be connected to the ship's main and emergency source of power
– Ships proceeding to latitudes over 80 degrees shall be fitted with at least one GNSS compass
– Two remotely rotatable, narrow-beam search lights controllable from the bridge to provide lighting
over an arc of 360 degrees, or other means to visually detect ice (Exception for operations in 24 h
day light)
– “Brake light” for icebreaker assisted operations, manually initiated flashing red light visible from
astern to indicate when the ship is stopped
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Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 10. Communication
� Goal
Effective communication for ships and survival craft during normal operation and in emergency
situations
� Regulations – Ship communication
– Communication equipment for ship-to-ship and ship-to-shore communication considering
high latitudes and the anticipated low temperature
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– Two-way on-scene and SAR coordination communication capability in
ships shall include:
�voice and/or data communications with relevant rescue coordination
centres
�equipment for voice communications with aircraft
� Communication equipment shall provide for two-way voice and data
communication with a Telemedical Assistance Service
DNV GL © 17 October 2018
Chapter 10. Communication
� Regulations – Survival craft and rescue boat communications capabilities
– for distress alerting, carry one device for transmitting ship to shore alerts
– EPIRB
– in order to be located, carry one device for transmitting signals for location
– SART
– for on-scene communications, carry one device for transmitting and receiving
– VHF
� ships intended to operate in low air temperature all other survival craft shall:
– in order to be located, carry one device for transmitting signals for location
– SART
– For on-scene communications, carry one device for transmitting and receiving
� Recognizing the limitations arising from battery life, procedures shall be
developed and implemented such that mandatory communication equipment for
use in survival craft, including liferafts, and rescue boats are available for
operation during the maximum expected time of rescue.
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Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 11. Voyage Planning
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� Goal
To ensure that the Company, Master and Crew are provided with sufficient information to ensure
safety for the ship and persons on board and, as appropriate, environmental protection.
� Requirement
– The voyage plan shall take into account the potential hazards of the intended voyage
– The master shall plan the route through polar waters including:
Procedures required by PWOM
Any limitations related to hydrographic information
Iceberg information along the route
Statistical metocean data including ice and temperatures from former years
Places of refuge
Possible presence of marine mammals
Possible protected areas
Available SAR resources
DNV GL © 17 October 2018
Polar Operational Limit Assessment Risk Indexing System (POLARIS)
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• Ice type and concentration is continuously changing
• 100% ice coverage of one ice type is very rare in practice
• Need for a Decision Support System
POLARIS
Actual ice condition
Ice class of ship
Ice breaker support
or independent
Don’t operate
More cautious
operation
Operate
INPUT RISK LEVEL OPERATION
DNV GL © 17 October 2018106
Part I-A SAFETY MEASURES
Chapter 1: General
Chapter 2: Polar Water Operation Manual
Chapter 3: Ship Structure
Chapter 4: Subdivision and Stability
Chapter 5: Watertight and Weathertight Integrity
Chapter 6: Machinery Installations
Chapter 7: Fire Safety/Protection
Chapter 8: Life Saving Appliances and Arrangements
Chapter 9: Safety of Navigation
Chapter 10: Communication
Chapter 11: Voyage Planning
Chapter 12: Manning and Training
Part I-B: Additional guidance regarding the provisions of the introduction and Part I-A
DNV GL © 17 October 2018
Chapter 12. Manning and training
107
� Goal
Ensure that ships operating in polar waters are appropriately manned by adequately qualified,
trained and experienced personnel
DNV GL © 17 October 2018
Chapter 12. Manning and training
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DNV GL © 17 October 2018
Part II-APOLLUTION PREVENTION MEASURES
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Pollution prevention measures
� Chapter 1 Prevention of Pollution from oil
– To provide for means to reduce and to the extent practicable prevent harmful environmental
impacts from oil from ships, taking into account the particular environmental conditions and
resilience capabilities in polar waters.
– Plans, manuals, records and procedures and means shall be provided to avoid environmental
impact
– Ships shall be designed and have plans to minimize the risk of any environmental impact from
oil or oily mixtures in case of an emergency situation, in particular one that may lead to an oil
spill in ice-covered waters.
– In Arctic waters any discharge into the sea of oil or oily mixtures from any ship shall be
prohibited
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Pollution prevention measures
� Chapter 2 noxious liquid substances
– No discharge in Arctic Waters
� Chapter 4 sewage from ships
– Limitation for discharge
� Chapter 5 garbage
– Limitation for discharge
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DNV GL © 17 October 2018
Summary
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DNV GL © 17 October 2018
IMO Polar Code will increase the safety of polar navigation
The code includes requirements to:
� Vessel, structure and stability
� Navigation equipment
� Materials (temperature)
� Life boats and life saving equipment
� Fire safety
� Training
� Certification – follow up by flag/port state
Main objective:
- reduce risk to an acceptable level
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DNV GL © 17 October 2018
DNV GL could support you on securing safety and environmental protection.
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DNV GL © 17 October 2018
Maritime Advisory in a nutshell
115
We help clients to mobilise the full potential of their assets and operations. We offer technical and management support and assist clients in
managing risk through high value advisory services.
Maritime Advisory
Service
Areas ofExpertise
Facts
� Hydrodynamics
� Mechanical & Systems Engineering
� Structures
� Noise & Vibration
� Shipping Advisory
� Concept Advisory
� Safety, Risk & Reliability
� Lifecycle Management
� Part of DNV GL Maritime
� ~250 highly skilled staff
� Offices in Norway, Germany, China, Singapore, USA, Japan andAustralia
� Almost 100 services mobilizing the full potential of our client’s assets and operations
� 5% of annual revenue invested into R&D
� Vast computational capacities
DNV GL © 17 October 2018
DNV GL services to help in Polar Code compliance
� Operational assessment
� Structural analysis for checking ice class equivalency
� Stability analysis considering ice and snow accretion
� Risk analysis of planned voyages in polar areas
� Assistance with developing PWOM
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DNV GL © 17 October 2018
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